Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Patent
1983-12-19
1987-02-17
DeMeo, Palmer C.
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
H01J 6144
Patent
active
046442235
ABSTRACT:
A low-pressure mercury vapor discharge lamp having a very satisfactory color rendition (R(a,8).gtoreq.85) and having a color temperature of at least 3200 K. and a color point located on or near the Planckian locus. The lamp is provided with a luminescent layer comprising:
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patent: 3595802 (1971-07-01), Blasse
patent: 3925239 (1975-12-01), Wanmaker et al.
patent: 4174294 (1979-11-01), Murakami et al.
patent: 4319161 (1982-03-01), Looye et al.
Berns Everhardus G.
De Hair Johannes T. W.
Van Kemenade Johannes T. C.
DeMeo Palmer C.
O'Shea Sandra L.
Spain Norman N.
U.S. Philips Corporation
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